Origin
Southern and central Africa, Vietnam
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Color
Green, Black, Brown
Blue, Green
Streak
White
Blue
For which Rashi?
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-
Planet
-
-
Element of Planets
-
-
Energy
-
-
How to Wear?
Finger
-
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Ring Metal
-
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Deities
-
-
Not to wear with
-
-
Powers
-
-
Birthstone
Planetary
-
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Talisman
-
-
Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.04-3.263.80-4.15
1
7.18
👆🏻
Fracture
Splintery, Uneven
Uneven
Cleavage
{110} perfect
perfect along [010] and [100]
Mohs Hardness
5-63.5-4
2
10
👆🏻
Chemical Composition
NaCa 2(Mg 4Al)Si 6Al 2O 22(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Cu 5(SiO 3) 4(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Luster
Vitreous
Silky
Pleochroism
-
X = very pale blue; Y = pale blue; Z = deep blue
Dispersion
0.020.02
0.005
1
👆🏻
Transparency
Transparent
Translucent
Refractive Index
1.613-1.6631.752-1.815
1
3.25
👆🏻
Optic Character
-
-
Crystal System
monoclinic
Orthorhombic
Birefringence
0.0200.063
0
0.296
👆🏻
Clarity
Transparent
Translucent
Physical
Neurological
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-
Cardiovascular
-
-
Respiratory
Excellent
Good
Reproductive
Supports reproductive health
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Digestive
-
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Psychology
-
Communication
Healing
Emotional healing
Emotional healing
Qualities Associated
Healing
Communication